I am trying to convert a Json to a Java object.I have a String named ' result ' and I want to Convert it into a Java Object whose class is TransferRecord.java
This is a part of the string I use as the input.
{
"TransferRecord": {
"TransferId": {
"TransferRef": "string",
"DistributorRef": "string"
},
"SkuCode": "string",
"Price": {
"CustomerFee": 0,
"DistributorFee": 0,
"ReceiveValue": 0,
"ReceiveCurrencyIso": "string",
"ReceiveValueExcludingTax": 0,
"TaxRate": 0,
"TaxName": "string",
"TaxCalculation": "string",
"SendValue": 0,
"SendCurrencyIso": "string"
},
"CommissionApplied": 0,
"StartedUtc": "2019-01-31T10:10:20.527Z",
"CompletedUtc": "2019-01-31T10:10:20.527Z",
"ProcessingState": "string",
"ReceiptText": "string",
"ReceiptParams": {},
"AccountNumber": "string"
},
"ResultCode": 0,
"ErrorCodes": [
{
"Code": "string",
"Context": "string"
}
]
}
This is the TransferRecord class. I checked the json mapping and they are perfectly identical.Note that there are more fields available in class but I just pasted a part of it.The number of properties in input string and the java class are same.
public class TransferRecord {
@JsonProperty("TransferId")
private TransferId transferId = null;
@JsonProperty("SkuCode")
private String skuCode = null;
@JsonProperty("Price")
private Price price = null;
@JsonProperty("CommissionApplied")
private BigDecimal commissionApplied = null;
@JsonProperty("StartedUtc")
private Date startedUtc = null;
@JsonProperty("CompletedUtc")
private Date completedUtc = null;
@JsonProperty("ProcessingState")
private String processingState = null;
@JsonProperty("ReceiptText")
private String receiptText = null;
@JsonProperty("ReceiptParams")
private Map<String, String> receiptParams = null;
@JsonProperty("AccountNumber")
private String accountNumber = null;
public TransferRecord transferId(TransferId transferId) {
this.transferId = transferId;
return this;
}
}
Following is my code which I used for the conversion.Note that these three pieces of code would serve the same purpose and I tried them separately.
ObjectMapper mapper = new ObjectMapper();
//1 TransferRecord objTransRecord = mapper.readValue(result, TransferRecord.class);
//2 TransferRecord objTransRecord = mapper.readerWithView(TransferRecord.class).forType(TransferRecord.class).readValue(result);
//3 TransferRecord objTransRecord = mapper.readerFor(TransferRecord.class).readValue(result);
Problem is when I try to create the object,every value is set to null in all three approaches even though there are corresponding data available in the String. Can someone please point out what I am doing wrong here?
Thanks in advance. :)
first, json should be :
{
"TransferId": {
"TransferRef": "string",
"DistributorRef": "string"
},
"SkuCode": "string",
"Price": {
"CustomerFee": 0,
"DistributorFee": 0,
"ReceiveValue": 0,
"ReceiveCurrencyIso": "string",
"ReceiveValueExcludingTax": 0,
"TaxRate": 0,
"TaxName": "string",
"TaxCalculation": "string",
"SendValue": 0,
"SendCurrencyIso": "string"
},
"CommissionApplied": 0,
"StartedUtc": "2019-01-31T10:10:20.527Z",
"CompletedUtc": "2019-01-31T10:10:20.527Z",
"ProcessingState": "string",
"ReceiptText": "string",
"ReceiptParams": {},
"AccountNumber": "string"
}
second, maybe you should add getter and setter methods for each field。
Use toString methods to print values directly and structure your classes as follows
ObjectMapper mapper = new ObjectMapper();
Data data = mapper.readValue(string, Data.class);
System.out.println(data);
Data class
public class Data {
@JsonProperty("TransferRecord")
private TransferRecord transferRecord;
@JsonProperty("ResultCode")
private int
resultCode;
@JsonProperty("ErrorCodes")
private List<ErrorCode> errorCodes;
@Override
public String toString() {
return "Data [transferRecord=" + transferRecord + ", resultCode=" + resultCode + ", errorCodes=" + errorCodes
+ "]";
}
}
Error Code Class:
public class ErrorCode {
@JsonProperty("Code")
private String code;
@JsonProperty("Context")
private String context;
@Override
public String toString() {
return "ErrorCode [code=" + code + ", context=" + context + "]";
}
}
TransferRecord Class:
public class TransferRecord {
@JsonProperty("TransferId")
private TransferId transferId;
@JsonProperty("SkuCode")
private String skuCode;
@JsonProperty("Price")
private Price price;
@JsonProperty("CommissionApplied")
private BigDecimal commissionApplied;
@JsonProperty("StartedUtc")
private Date startedUtc;
@JsonProperty("CompletedUtc")
private Date completedUtc;
@JsonProperty("ProcessingState")
private String processingState;
@JsonProperty("ReceiptText")
private String receiptText;
@JsonProperty("ReceiptParams")
private Map<String, String> receiptParams;
@JsonProperty("AccountNumber")
private String accountNumber;
@Override
public String toString() {
return "TransferRecord [transferId=" + transferId + ", skuCode=" + skuCode + ", price=" + price
+ ", commissionApplied=" + commissionApplied + ", startedUtc=" + startedUtc + ", completedUtc="
+ completedUtc + ", processingState=" + processingState + ", receiptText=" + receiptText
+ ", receiptParams=" + receiptParams + ", accountNumber=" + accountNumber + "]";
}
}
TransferId Class:
public class TransferId {
@JsonProperty("TransferRef")
private String transferRef;
@JsonProperty("DistributorRef")
private String distributorRef;
@Override
public String toString() {
return "TransferId [transferRef=" + transferRef + ", distributorRef=" + distributorRef + "]";
}
}
Price Class:
public class Price {
@JsonProperty("CustomerFee")
private int customerFee;
@JsonProperty("DistributorFee")
private int distributorFee;
@JsonProperty("ReceiveValue")
private int receiveValue;
@JsonProperty("ReceiveCurrencyIso")
private String receiveCurrencyIso;
@JsonProperty("ReceiveValueExcludingTax")
private int receiveValueExcludingTax;
@JsonProperty("TaxRate")
private int taxRate;
@JsonProperty("TaxName")
private String taxName;
@JsonProperty("TaxCalculation")
private String taxCalculation;
@JsonProperty("SendValue")
private int sendValue;
@JsonProperty("SendCurrencyIso")
private String sendCurrencyIso;
@Override
public String toString() {
return "Price [customerFee=" + customerFee + ", distributorFee=" + distributorFee + ", receiveValue="
+ receiveValue + ", receiveCurrencyIso=" + receiveCurrencyIso + ", receiveValueExcludingTax="
+ receiveValueExcludingTax + ", taxRate=" + taxRate + ", taxName=" + taxName + ", taxCalculation="
+ taxCalculation + ", sendValue=" + sendValue + ", sendCurrencyIso=" + sendCurrencyIso + "]";
}
}
This it NOT TransferRecord class. Your json fetch class with 3 fields:
public class Something {
@JsonProperty("TransferRecord")
private TransferRecord transferRecord;
@JsonProperty("ResultCode")
private int resultCode;
@JsonProperty("ErrorCodes")
private List<ErrorCode> errorCodes;
}
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.